Alexander j



(No Model.)

A. J. RY.

NUT GK. l No. 406,953. Patented July 16, 1889.

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ALEXANDER LI. PERRY, OF THE UNITED STATES ARMY.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 406,958, dated July 16,1889.

Application filed March 23, 1887.

To all whom, t may concern:

Be it known that I, ALEXANDER J. PERRY, of the United States Army, nowresiding at San Francisco, San Francisco county, California, haveinvented certain new and useful Improvements in Bolt and Nut Locks, ofwhich the following is a specification.

My improvements are especially designed for use in connection withfish-plates for uniting the abutting ends of railway-rails; but myinvention is not thus limited in its application, as some features ofthe invention may be employed wherever it is necessary or desirable tolook a bolt in its socket or lock a nut to its bolt.

In the accompanying drawings, illustrating my invention, Figure l showsa section of a railway-rail and fish-plates with my improvementsapplied. Fig. 2 is aview of the boltloeking plate. Figs. 3 and l areviews of the nut-locking plate and nuts, and Fig. 5 illustrates amodiedconstruction for locking the bolts.

In Fig. l of the drawings I have shown my improvements applied to oneend of the {ishplates on one side of the rail-joint. The locking deviceson the opposite side of the joint may be precisely the same, and need'not be illustrated or described.

The {ish-plates A A on opposite sides of the rail l5 are preferablyprovided with elongated apertures u, somewhat longer than the width ofthe bolts C, to admit of the bolts having a slight movement with therail without moving the fish-plates. Such a movement is often caused bythe longitudinal expansion and contraction of the rail, and it isdesirable that the fish-plate remain stationary while admitting themovement of the bolts with the rail. The bolts C, which extend throughthe apertures a and through the apertures l) in the rail, are locked inposition by a plate D, provided with apertures or sockets d, throughwhich the shanks of the bolts are inserted, and thus forming closedrecesses orsockets, in which the squared or polygonal heads of the boltneatlyiit. The sockets d are preferably beveled to correspond with thebeveled heads of the bolts, so that when the bolts are driven home andthe bolt-heads seated in their sockets the plate is held in place with-Serial No. 232,154. (No model.)

out additional fastenings and will effectively prevent the bolts fromturning. Instead of using a separate locking-plate, the fish-plate may,in addition to the aperture a, have a socket a for the head of the bolt,as indicated in Fig.

The polygonal nuts E have beveled sides tapering from their upper orouter ends inwardly. Then driven home on the bolts, the flat under sidesof the nuts (which are the smaller sides) rest against the fish-plate A.The fish-plates are lirmly secured to the ail by the two bolts C andtheir nuts, and the bolts are prevented from turning in their sockets bymeans of the locking-plate D, or by the sockets in the fish-plates, asindicated in Fig. 5. It now remains to lock the nuts to the bolts toprevent then-1 from turning thereon. This I effect by means of asemi-rigid endwiseexpansible bar or plate F, having forked beveled endsto Iit the beveled nuts.

The bar, when straight or extended to its greatest extent, is of alength sutlieient to extend from one bolt to the other and inelose thenuts in its forked ends. The forked ends of the plate F, or rather therecesses in the ends of the plate, are preferably of a form or contourto correspond with one-half of the nut, and the sides of the recess arebeveled to correspond with the bevels on the nuts. It is not, however,absolutely necessary that the recesses correspond exactly with the shapeof the nuts, as the tines of the forks embracing opposite sides of thenuts will be effective, but not so much so as where the recessesaccurately lit one-half of the nut, as indicated in the drawings. It is,however, always desirable to have the tines of the forks beveled tocorrespond with the beveled sides of the nuts. Before being put in placethe lockingplate F is bent, as shown in Fig. l, so that the extreme endsof the fork on each end of the plate may beinsertcd under the nuts. Whenin this position the plate is forced in and straightened out by lneansof a Sledge-hammer or the like. The locking-plate now lies parallel withthe fish-plate, and its forked ends embrace the beveled nuts. The platecannot disengage itself from the nuts, and the nuts cannot turn on thebolts. To unlock the nuts the plate F may be bent and IOO thus removedby applying a tool between th locking-plate and the fish-plate.

The locking-plate F may be made of steel, iron, or any other suitablematerial, but preterably of Wrought-iron.

I claim as my inventione l. The Combination, substantially as herein setforth, of the bolts, their beveled nuts, and the semi-rigidendWise-expansible lookingplate or bar forked at opposite ends andhaving beveled tines which correspond with and snugly fit the bevelednuts when. the loekin gplate is expanded to its greatest extent.

2. The combination, substantially as herein set forth, of the abuttingrails, the sh-plates having elongated apertures for the bolts andoverlapping the abutting ends of the rails, the bolts having angularbeveled heads, and the bolt-locking plate having angular beveledrecesses closed on all sides for the bolt-heads.

In testimonywhereof I have hereunto subscribed my name.

ALEX. J. PERRY. Witnesses:

D. A. THATCHER,

F. C. FORD.

